If you’ve been to a minor league baseball game, you know it’s tame fun with a hint of sadness. What’s sad is that many of the wildly ambitious and talented players will never hear the roar of a real crowd or get the glory that accompanies fame.

For me, the experience is similar to seeing a Broadway show at a regional theater. The one difference is that on good nights the actors at a regional theater do hear the roar, a sound satisfying beyond money. Still, after the curtain falls, you’re in a bar wearing street clothes and looking normal and someone asks what you do for a living and you’re afraid they’ll laugh if you say you are currently performing on stage as Elvis Presley.

At the Bucks County Playhouse this weekend in New Hope, Pennsylvania, I saw not only Elvis but actors portraying Johnny Cash, Jerry Lee Lewis and Carl Perkins. This 50s-era group of rock and roll royalty once came together by chance at a small recording studio called Sun Records. For a few brief hours on Dec. 4, 1956, they formed what came to be known as the Million Dollar Quartet.

That was the show I saw, “Million Dollar Quartet.” It was based on the recordings the four made under the guidance of legendary producer Sam Phillips. When I walked into the theater my first impression was that the set, a recreation of Sun Records, looked really good. Knowing little about what I was to see and hear, I was even more impressed when a Playhouse employee announced that all music would be live and performed by the actors on stage. Nothing had been prerecorded.

As I waited for the show to start, I assumed the audience would be kind but not overly enthusiastic, mainly because it was a very old audience. More than a few people had walkers and canes and I wasn’t feeling too good myself. When the music started playing – there are 22 numbers in the show – I was relieved that the reaction was, if not effusive, at least respectable. The performances, however, were so good that younger people might have been up and hollering. Even so, I was confident the people who created the show were experts at pacing and that we weren’t supposed to really let go until the end. This turned out to be true.

A few points in general about the show, which continues thru September 29: Johnny Cash didn’t look much like Johnny Cash and Jerry Lee Lewis came off too much like Harpo Marx, but as a regional show is was worth the ticket price. As one of those so-called jukebox musicals, songs dominated over plot. A minimal story line involved Sam Phillips’ struggle over whether to sell out to RCA; Johnny Cash’s worry about telling Sam he was leaving Sun for Columbia Records; and Carl Perkins’ anger at Elvis for recording his song, “Blue Suede Shoes.”

In the end, everyone came together in mutual respect, understanding and friendship. This fresh harmony allowed the actors to finish in concert style with three strong numbers. Right before the concert, there was a touching bit that probably doesn’t sound touching if written about. Sam Phillips, the record producer, asks the four boys to pose for what he says will be an historic photo. They pose, Sam shoots, and the actual photo the real Sam Phillips took on Dec. 4, 1956 comes down from the ceiling. Everyone claps. Some tear up.

The concert consisted of “Hound Dog” by Elvis, “Ghost Riders In the Sky” by Cash and “See You Later Alligator” by Perkins. These numbers were clearly full-tilt/high energy and the crowd, some with walker assists, finally got on its feet and went nuts. After “Alligator,” the boys proudly marched off stage and Sam Phillips urged us to demand an encore, which we already were doing.

The boys came back. They ripped it up and shook the house with Jerry Lee Lewis doing “Whole Lotta Shakin.” Sam Phillips, who so far had only dialogue and narration, coolly pulled out a harmonic and gave an incredible mouth organ solo.

It all ends, and we cheer loudly. This was the best part because you could see the actor/musicians break character, glance at each other in unexpected ways and silently say with expressions of delight and satisfaction, “Seems like we did pretty good tonight.”

The loving reception gave them hope that even if they are in the minors now, one day soon they could be called up.